Note: I am working in plain C. Not C++, not C#.
I am working on a mod. I've already written a working DLL-injector, as well as the DLL to be injected. Everything is going well, apart from the userinput.
I want to be able to use hotkeys, so I tried to setup a keyboardhook using SetWindowsHookEx. The following is my callback function:
LRESULT CALLBACK keyboardHook(int nCode, WPARAM wParam, LPARAM lParam)
{
printf("key touched\n");
if (wParam == VK_F5)
{
keyEvent = VK_F5;
}
return CallNextHookEx(NULL, nCode, wParam, lParam);
}
And this is how I set it up:
HHOOK kbHookHandle = SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)keyboardHook, NULL, GetCurrentThreadId());
if (kbHookHandle != NULL)
{
printf("keyboard hook successful!\n");
}
else
{
printf("keyboard hook failed!\n");
}
As far as I can tell, the hook gets setup well (I used to have a problem with an invalid parameter, but fixed that by using GetCurrentThreadID). It returns a handle which is not NULL.
But whenever I press a key, there is no output.
To further clarify: The code above is from the injected DLL. So it effectively 'belongs' to the game process. I have allocated a console using AllocConsole, to print debug messages to.
What am I doing wrong?
EDIT: To clarify (even more): the listed code is from the injected DLL. It is not the approach I use to inject the DLL - I wrote a seperate (working!) program to do just that.
It surprises some that I use printf(), since that wouldn't show up, considering I call it from inside the host process. Yes, I do call it from inside the host process, but that is not an issue, because I have already allocated a working console. I used an approach very similar to the one mentioned here
EDIT2: I am not asking why printf() isn't working (because it is), I am asking why this keyboardhook isn't working.